[Montana Man]

We boondocked for years in a 26 foot trailer with one Walmart car battery and one Honda 2000 generator. To keep warm I removed the original heater and put in an Olympian catalytic heater. On high it used 1/4 pound of propane per hour and zero electricity. The Honda ran just often enough to keep the battery charged. If we had a couple good batteries then charging would only be necessary every couple days. It was much less expensive than a solar setup. Not to mention more comfortable as the heat is steady and not constantly cycling up and down. I'm pretty sure that two of these heaters would keep any Montana warm on way less fuel and electrical power.